Source is a related term of motive.

As verbs the difference between source and motive

is that source is (chiefly|us) to obtain or procure: while motive is .

As a noun source

is the person, place or thing from which something (information, goods, etc) comes or is acquired.

As adjectives the difference between natural and ingrained

is that natural is that exists and evolved within the confines of an ecosystem while ingrained is being an element; present in the essence of a thing.

As a noun natural

is a native inhabitant of a place, country etc.

As a verb ingrained is

past tense of ingrain.

Unfavorable is a related term of deplorable.

As adjectives the difference between unfavorable and deplorable

is that unfavorable is disadvantageous, adverse, unsuitable, inconducive; serving to hinder or oppose while deplorable is lamentable, regrettable.

As adjectives the difference between abstract and generalised

is that abstract is derived; extracted while generalised is an alternative spelling of lang=en.

As verbs the difference between abstract and generalised

is that abstract is to separate; to disengage while generalised is past tense of generalise.

As a noun abstract

is an abridgement or summary.

As adjectives the difference between quiet and serious

is that quiet is with little or no sound; free from of disturbing noise while serious is without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.

As a verb quiet

is to become quiet, silent, still, tranquil, calm.

As a noun quiet

is the absence of sound; quietness.

Impenetrable is a related term of knotty.

As adjectives the difference between impenetrable and knotty

is that impenetrable is impenetrable while knotty is full of knots.

Benumbed is a related term of arctic.

As adjectives the difference between benumbed and arctic

is that benumbed is lacking sensation; numb while arctic is .

As a verb benumbed

is (benumb).

As a proper noun arctic is

.

As a noun arctic is

.

Renovate is a related term of enliven.

As verbs the difference between renovate and enliven

is that renovate is to renew; to revamp something to make it look new again while enliven is (obsolete|transitive) to give life or spirit to; to revive or animate.

As adjectives the difference between intricate and multifarious

is that intricate is having a great deal of fine detail or complexity while multifarious is having multiplicity; having great diversity or variety; of various kinds; diversified; made up of many differing parts; manifold.

As a verb intricate

is to become enmeshed or entangled.

Split is a related term of icecave.